[
  {
    "name": "nodeA",
    "value": 10,
    "children": [
      {
        "name": "nodeAa",
        "value": 4
      },
      {
        "name": "nodeAb",
        "value": 6
      }
    ]
  },
  {
    "name": "nodeA",
    "value": 10,
    "children": [
      {
        "name": "nodeAa",
        "value": 4
      },
      {
        "name": "nodeAb",
        "value": 6
      }
    ]
  },
  {
    "name": "nodeB",
    "value": 20,
    "children": [
      {
        "name": "nodeba",
        "value": 20
      }
    ]
  },
  {
    "name": "nodeC",
    "value": 20,
    "children": [
      {
        "name": "nodeca",
        "value": 20
      }
    ]
  }
]